Improved lamp-shade



UNITED STATES FATENT OFFICE.

CORNELIUS ST. JOHN, OF BOSTON, MASSACHUSETTS.

IMPROVED LAMP-SHADE.

To all 'whom it may concern:

Be it known that I, CORNELIUS ST. J oHN, ot'Boston,in the=county ofSuffolk and State of Massachusetts, have invented a new and useful orImproved Lamp-Shade; and I do hereby declare the same to be fullydescribed in the following specification and represented in theaccompanying drawings, of which- Figure l is a top view, Fig. 2 a sideelevation, and Fig. 3 a vertical section, ot' the said shade. Fig. 4 isa top View, and Fig. 5 a side elevation, ofits expander. Fig. 6 is aside View of the shade as it appears when in a folded state, and withthe expander encompassing it. Fig. 7 is a horizontal section of theshade when opened in the form of a conic frustum.

The body of the shade is a corrugated cylindrical tube, A, made of paperor other suitable material, it being laid in folds or plaits runninglengthwise ofthe said body, the same being as exhibited in the drawings.Through these plaits, and near to the upper end of the body, a ring, B,is run, such ring also going through two arms, a a, ofa short metallictube, C, which is provided with springs or elastic projections c c c,arranged as shown in the drawings. When the shade is placed on the glasschimney of a lamp these springs or projections serve to hold it thereon.

Besides the. above, the shade has an expander, D, which consists of anannulus, d, having elastic projections or springs c c c f f f extendingfrom its inner circumference in manner as shown in Figs. 4 and 5. Thisexpander is to have a diameter larger than that of the ring B, and whenused is placed on and so as to encircle the lamp-chimney. On pressingthe shade downward on the chimney and the expander the latter will notonly serve as an additional support to the shade, but will expand itinto the form of a frustum of a cone, and to such extent as may benecessary, the expansion of the shade being increased as the expander isforced up into the shade or the latter pressed down on the expander.

After the shade may have been removed from the lamp-chimney its lowerend may be compressed, so as to enable the shade to be inserted into theexpander in manner as represented in Fig. 6, when the whole will be reduced to a small compass or convenient form for being laid or packedaway.

I claiml. The improved folding lamp-shade, made substantially asdescribed-viz., of the folding bodyl A and the supportingannulus B andtube C and its projections, or the equivalents thereof, applied to oneend ofsuch body in manner and so as not only to support the body on alampchimney, butto enable it to be expanded while thereon, substantiallyas set forth.

2. In combination, with the folding lampshade so made, the expander D,constructed substantially as and to be used as specified.

CORNELIUS ST. JOHN.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

